China Method of extraction GB Standards Search Result |
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GB/T 223.57-1987 Methods for chemical analysis of iron，steel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content 钢铁及合金化学分析方法 萃取分离-吸附催化极谱法测定镉量 - 英文版 |
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GB/T 6531-1986 Crude petroleum and fuel oils--Determination of sediment--Extraction method 原油和燃料油中沉淀物测定法(抽提法) - 英文版 |
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